A plane burns $406$406 litres of fuel every $14$14 kilometres while in the air.
Express the fuel consumption as a unit rate.
Write the following as a unit rate:
$1040$1040 books per $13$13 libraries
Write the following as a unit rate:
$91$91 people per $7$7 buses
Write the following as a unit rate:
$234$234 kilometres per $4.5$4.5 hours